/**
 * jqFancyTransitions - jQuery plugin
 * 
 * @version: 1.8 (2010/06/13)
 * @requires jQuery v1.2.2 or later
 * @author Ivan Lazarevic Examples and documentation at:
 *         http://www.workshop.rs/projects/jqfancytransitions
 * 
 * Dual licensed under the MIT and GPL licenses:
 * http://www.opensource.org/licenses/mit-license.php
 * http://www.gnu.org/licenses/gpl.html
 */

(function($) {
	var opts = new Array;
	var level = new Array;
	var img = new Array;
	var links = new Array;
	var titles = new Array;
	var order = new Array;
	var imgInc = new Array;
	var inc = new Array;
	var stripInt = new Array;
	var imgInt = new Array;
	$.fn.jqFancyTransitions = $.fn.jqfancytransitions = function(options) {
		init = function(el) {
			opts[el.id] = $.extend({}, $.fn.jqFancyTransitions.defaults,
					options);
			img[el.id] = new Array();
			links[el.id] = new Array();
			titles[el.id] = new Array();
			order[el.id] = new Array();
			imgInc[el.id] = 0;
			inc[el.id] = 0;
			params = opts[el.id];
			if (params.effect == 'zipper') {
				params.direction = 'alternate';
				params.position = 'alternate';
			}
			if (params.effect == 'wave') {
				params.direction = 'alternate';
				params.position = 'top';
			}
			if (params.effect == 'curtain') {
				params.direction = 'alternate';
				params.position = 'curtain';
			}
			stripWidth = parseInt(params.width / params.strips);
			gap = params.width - stripWidth * params.strips;
			stripLeft = 0;
			$.each($('#' + el.id + ' img'), function(i, item) {
				img[el.id][i] = $(item).attr('src');
				links[el.id][i] = $(item).next().attr('href');
				titles[el.id][i] = $(item).attr('alt') ? $(item).attr('alt')
						: '';
				$(item).hide();
			});
			$('#' + el.id).css({
				'background-image' : 'url(' + img[el.id][0] + ')',
				'width' : params.width,
				'height' : params.height,
				'position' : 'relative',
				'background-position' : 'top left'
			});
			$('#' + el.id)
					.append(
							"<div class='ft-title' id='ft-title-"
									+ el.id
									+ "' style='position: absolute; bottom:0; left: 0; z-index: 1000; color: #fff; background-color: #000; '>"
									+ titles[el.id][0] + "</div>");
			if (titles[el.id][imgInc[el.id]])
				$('#ft-title-' + el.id)
						.css('opacity', opts[el.id].titleOpacity);
			else
				$('#ft-title-' + el.id).css('opacity', 0);
			if (params.navigation) {
				$.navigation(el);
				$('#ft-buttons-' + el.id).children().first().addClass(
						'ft-button-' + el.id + '-active');
			}
			odd = 1;
			for (j = 1; j < params.strips + 1; j++) {
				if (gap > 0) {
					tstripWidth = stripWidth + 1;
					gap--;
				} else {
					tstripWidth = stripWidth;
				}
				if (params.links)
					$('#' + el.id)
							.append(
									"<a href='"
											+ links[el.id][0]
											+ "' class='ft-"
											+ el.id
											+ "' id='ft-"
											+ el.id
											+ j
											+ "' style='width:"
											+ tstripWidth
											+ "px; height:"
											+ params.height
											+ "px; float: left; position: absolute;outline:none;'></a>");
				else
					$('#' + el.id)
							.append(
									"<div class='ft-"
											+ el.id
											+ "' id='ft-"
											+ el.id
											+ j
											+ "' style='width:"
											+ tstripWidth
											+ "px; height:"
											+ params.height
											+ "px; float: left; position: absolute;'></div>");
				$("#ft-" + el.id + j).css({
					'background-position' : -stripLeft + 'px top',
					'left' : stripLeft
				});
				stripLeft += tstripWidth;
				if (params.position == 'bottom')
					$("#ft-" + el.id + j).css('bottom', 0);
				if (j % 2 == 0 && params.position == 'alternate')
					$("#ft-" + el.id + j).css('bottom', 0);
				if (params.direction == 'fountain'
						|| params.direction == 'fountainAlternate') {
					order[el.id][j - 1] = parseInt(params.strips / 2)
							- (parseInt(j / 2) * odd);
					order[el.id][params.strips - 1] = params.strips;
					odd *= -1;
				} else {
					order[el.id][j - 1] = j;
				}
			}
			$('.ft-' + el.id).mouseover(function() {
				opts[el.id].pause = true;
			});
			$('.ft-' + el.id).mouseout(function() {
				opts[el.id].pause = false;
			});
			$('#ft-title-' + el.id).mouseover(function() {
				opts[el.id].pause = true;
			});
			$('#ft-title-' + el.id).mouseout(function() {
				opts[el.id].pause = false;
			});
			clearInterval(imgInt[el.id]);
			imgInt[el.id] = setInterval(function() {
				$.transition(el)
			}, params.delay + params.stripDelay * params.strips);
		};
		$.transition = function(el, direction) {
			if (opts[el.id].pause == true)
				return;
			stripInt[el.id] = setInterval(function() {
				$.strips(order[el.id][inc[el.id]], el)
			}, opts[el.id].stripDelay);
			$('#' + el.id).css({
				'background-image' : 'url(' + img[el.id][imgInc[el.id]] + ')'
			});
			if (typeof (direction) == "undefined")
				imgInc[el.id]++;
			else if (direction == 'prev')
				imgInc[el.id]--;
			else
				imgInc[el.id] = direction;
			if (imgInc[el.id] == img[el.id].length) {
				imgInc[el.id] = 0;
			}
			if (imgInc[el.id] == -1) {
				imgInc[el.id] = img[el.id].length - 1;
			}
			if (titles[el.id][imgInc[el.id]] != '') {
				$('#ft-title-' + el.id).animate({
					opacity : 0
				}, opts[el.id].titleSpeed, function() {
					$(this).html(titles[el.id][imgInc[el.id]]).animate({
						opacity : opts[el.id].titleOpacity
					}, opts[el.id].titleSpeed);
				});
			} else {
				$('#ft-title-' + el.id).animate({
					opacity : 0
				}, opts[el.id].titleSpeed);
			}
			inc[el.id] = 0;
			buttons = $('#ft-buttons-' + el.id).children();
			buttons.each(function(index) {
				if (index == imgInc[el.id]) {
					$(this).addClass('ft-button-' + el.id + '-active');
				} else {
					$(this).removeClass('ft-button-' + el.id + '-active');
				}
			});
			if (opts[el.id].direction == 'random')
				$.fisherYates(order[el.id]);
			if ((opts[el.id].direction == 'right' && order[el.id][0] == 1)
					|| opts[el.id].direction == 'alternate'
					|| opts[el.id].direction == 'fountainAlternate')
				order[el.id].reverse();
		};
		$.strips = function(itemId, el) {
			temp = opts[el.id].strips;
			if (inc[el.id] == temp) {
				clearInterval(stripInt[el.id]);
				return;
			}
			$('.ft-' + el.id).attr('href', links[el.id][imgInc[el.id]]);
			if (opts[el.id].position == 'curtain') {
				currWidth = $('#ft-' + el.id + itemId).width();
				$('#ft-' + el.id + itemId).css(
						{
							width : 0,
							opacity : 0,
							'background-image' : 'url('
									+ img[el.id][imgInc[el.id]] + ')'
						});
				$('#ft-' + el.id + itemId).animate({
					width : currWidth,
					opacity : 1
				}, 1000);
			} else {
				$('#ft-' + el.id + itemId).css(
						{
							height : 0,
							opacity : 0,
							'background-image' : 'url('
									+ img[el.id][imgInc[el.id]] + ')'
						});
				$('#ft-' + el.id + itemId).animate({
					height : opts[el.id].height,
					opacity : 1
				}, 1000);
			}
			inc[el.id]++;
		};
		$.navigation = function(el) {
			
			$("<div id='ft-buttons-" + el.id + "'></div>").insertAfter(
					$('#' + el.id));
			$('#ft-buttons-' + el.id).css({
				'text-align' : 'right',
				'padding-top' : 5,
				'width' : opts[el.id].width
			});
			for (k = 1; k < img[el.id].length + 1; k++) {
				$('#ft-buttons-' + el.id).append(
						"<a href='#' class='ft-button-" + el.id + "'>" + "<img src='imgs/btn_img_act.png'/>"
								+ "</a>");
			}
			$('.ft-button-' + el.id).css({
				'padding' : 5
			});
			$.each($('.ft-button-' + el.id), function(i, item) {
				$(item).click(function(e) {
					e.preventDefault();
					$.transition(el, i);
					clearInterval(imgInt[el.id]);
					imgInt[el.id] = setInterval(function() {
						$.transition(el)
					}, params.delay + params.stripDelay * params.strips);
				})
			});
		}
		$.fisherYates = function(arr) {
			var i = arr.length;
			if (i == 0)
				return false;
			while (--i) {
				var j = Math.floor(Math.random() * (i + 1));
				var tempi = arr[i];
				var tempj = arr[j];
				arr[i] = tempj;
				arr[j] = tempi;
			}
		}
		this.each(function() {
			init(this);
		});
	};
	$.fn.jqFancyTransitions.defaults = {
		width : 500,
		height : 332,
		strips : 10,
		delay : 5000,
		stripDelay : 50,
		titleOpacity : 0.7,
		titleSpeed : 1000,
		position : 'alternate',
		direction : 'fountainAlternate',
		effect : '',
		navigation : false,
		links : false
	};
})(jQuery);